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EP0180040B1 - Colour display tube - Google Patents

Colour display tube Download PDF

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Publication number
EP0180040B1
EP0180040B1 EP85112262A EP85112262A EP0180040B1 EP 0180040 B1 EP0180040 B1 EP 0180040B1 EP 85112262 A EP85112262 A EP 85112262A EP 85112262 A EP85112262 A EP 85112262A EP 0180040 B1 EP0180040 B1 EP 0180040B1
Authority
EP
European Patent Office
Prior art keywords
picture tube
colour picture
shadow mask
holding members
parts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85112262A
Other languages
German (de)
French (fr)
Other versions
EP0180040A3 (en
EP0180040A2 (en
Inventor
Otto Brunn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Deutschland GmbH
Original Assignee
Standard Elektrik Lorenz AG
Nokia Graetz GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Elektrik Lorenz AG, Nokia Graetz GmbH filed Critical Standard Elektrik Lorenz AG
Publication of EP0180040A2 publication Critical patent/EP0180040A2/en
Publication of EP0180040A3 publication Critical patent/EP0180040A3/en
Application granted granted Critical
Publication of EP0180040B1 publication Critical patent/EP0180040B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H01J29/073—Mounting arrangements associated with shadow masks

Definitions

  • the invention relates to a color picture tube according to the preamble of claim 1.
  • the two parts of the holding members are not firmly connected to one another; they are held by feathers and flags.
  • the mask is placed in the shield trough with the interposition of a distance gauge and then the parts of the holding members are fastened together.
  • the invention is therefore based on the object to design the color picture tube of the type mentioned in such a way that a tolerance compensation between the shadow mask and the pins in the screen trough when it is first inserted is possible in a simple manner and with simple holding members.
  • Fig. 1 only the screen trough 1 with the shadow mask 2 is shown from a conventional color picture tube.
  • the x-axis, the y-axis and the diagonals D1 and D2 are shown in this representation.
  • the area on the edge 4 of the shield trough 1, on which the shield trough is connected to the cone by means of glass solder, is designated by 3.
  • the screen trough 1 carries the luminescent layer, not shown, on its inside.
  • pins 5 are arranged which support the shadow mask 2 via holding members 6. The holding members 6 engage on the edge 7 of the shadow mask 2.
  • the axis of symmetry (longitudinal axis) of the color picture tube is at the intersection of the x-axis with the y-axis perpendicular to the plane of the drawing.
  • the mask 2 does not have to be held in the corners of the screen trough 1, but can also be provided at the intersections of the x and y axes with the edge 7 of the shadow mask 2 and the edge 4 of the screen trough.
  • FIG. 1 A first embodiment of a holding member 6 is shown in two views.
  • the holding member 6 consists of two parts 6a and 6b, some of which lie one above the other.
  • the part 6a is provided at its free end with the approximately triangular hole 8 through which the pin 5 engages.
  • At the free end of part 6b there is a recess 9 lying symmetrically to the longitudinal axis of the holding member 6, so that the part 6b ends in two prongs 10a and 10b.
  • These tines 10a, 10b are connected to the edge 7 of the shadow mask 2.
  • the parts 6a and 6b are arranged such that they can move with respect to one another, which is achieved by a swivel joint present in the overlapping region of the parts.
  • the swivel joint consists of a tubular rivet 11.
  • the free end of part 6a is much narrower than its area covered by part 6b.
  • the part 6a has two shoulders 13, the edge of which lies on an arc.
  • the circular arc is determined by a radius extending from the tubular rivet 11 to the shoulders 13.
  • In the middle of the shoulder 13 there is one of the guide tabs 12 which surround the edge of the part 6b.
  • This edge of part 6b forms part of an arc of a circle which is determined by the radius mentioned.
  • the longitudinal axes of the guide tabs 12 extend through the tubular rivet 11. This arrangement of the guide tabs 12 holds the two parts 6a and 6b of the holding member 6 in approximately one plane and releases the tubular rivet 11. Stead without the rotary movement of the parts against each other would be hindered or restricted.
  • a second embodiment of a holding member 6 is shown in two views, in which compared to the first embodiment, the pivot joint is made simpler.
  • the part 6a has an incision 14 at its end covered by the part 6b and the recess 9 between the prongs 10a, 10b in part 6b extends to the bottom of the incision 14.
  • the recess 9 is delimited by an arc near the bottom of the incision .
  • a guide tab 15 is arranged on the part 6a, which engages around the edge of the part 6b in the region of the cutout 9.
  • this is the parts 6a and 6b connecting swivel joint formed in a simple manner from the two guide tabs 12 and the guide tab 15 opposite them.
  • FIG. 4 shows a third embodiment of a holding member in two views. If only a lateral displacement is sufficient between the two parts 6a and 6b of the holding member 6, then this embodiment can be chosen.
  • the part 6a again has on the shoulders 13 guide tabs 12 which grip around the part 6b.
  • the course of the shoulders 13 is simplified in that their edge is perpendicular to the longitudinal axis of the holding member 6.
  • the part 6b has shoulders 16, the edge of which is also perpendicular to the longitudinal axis of the holding member.
  • the possible lateral movement of the parts 6a and 6b against one another is limited by the respective abutment of a guide tab 12 on the narrow free end of part 6a or a guide tab 17 on a prong 10 at the free end of part 6b.
  • the holding members 6 can also be designed in accordance with the embodiment shown in FIG.
  • part 6b of the holding members also serves as corner reinforcement 18 for shadow mask 2.
  • tubular rivet 11 is arranged as a swivel joint. To stiffen the part 6a, it can be provided with folded-over edges 19.
  • the holding members 6 are connected to the edge 7 of the shadow mask 2 at the locations provided for this purpose, directly to the shadow mask or via an intermediate piece to the shadow mask.
  • the shadow mask 2 is inserted into the shield trough 1 and the holding members 6 are simultaneously pushed onto the pins 5. Due to the mobility of the two parts of the holding members, the tolerances are compensated for by a possible movement transverse to the axis of symmetry of the color picture tube. The distance between the shadow mask and the luminescent layer remains unchanged.
  • the holding members are then fixed in their assumed position in that the parts of the holding members are connected to one another, for example by spot welding using a laser beam.
  • the new, simple holding members 6 can be mounted outside the color picture tube and attached to the shadow mask. As a result, the distance between the shadow mask and the luminescent layer is then fixed after insertion into the screen trough, so that no distance gauges are required. Any tolerances in the direction transverse to the axis of symmetry of the color picture tube are then compensated for as already described.

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  • Electrodes For Cathode-Ray Tubes (AREA)

Description

Die Erfindung bezieht sich auf eine Farbbildröhre gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a color picture tube according to the preamble of claim 1.

Aus der DE-A-3 215 742 ist eine deratige Farbbildröhre bekannt, deren Stifte zum Tragen der Maske unter einem derartigen Winkel in dem Rand der Schirmwanne eingeschmolzen sind, daß ihre Längsachsen parallel zum zu der betreffenden Ecke abgelenkten Elektronenstrahl verlaufen. Die freien Enden der Stifte sind kegelig und die Halteglieder sind zweiteilig ausgebildet. Ein erstes Teil der Halteglieder weist eine nahezu dreieckige Form auf und hat an seinem nicht mit der Maske befestigten Ende ein großes Loch. Dieses Loch wird teilweise von einem am ersten Teil befestigten zweiten Teil mit einer kleinen Öffnung abgedeckt. Die Öffnungen in den zweiten Teilen umfassen im zusammengebauten Zustand der Farbbildröhre die Stifte.From DE-A-3 215 742 such a color picture tube is known, the pins for carrying the mask of which are melted into the edge of the screen trough at such an angle that their longitudinal axes run parallel to the electron beam deflected to the relevant corner. The free ends of the pins are tapered and the holding members are made in two parts. A first part of the holding members has an almost triangular shape and has a large hole at its end that is not attached to the mask. This hole is partially covered by a second part attached to the first part with a small opening. The openings in the second parts enclose the pins when the color picture tube is assembled.

Vor dem Einbau der Maske in die Schirmwanne sind die beiden Teile der Halteglieder nicht fest miteinander verbunden; sondern sie werden von Federn und Fahnen gehalten. Die Maske wird unter zwischenfügung einer Abstandslehre in die schirmwanne gelegt und dann werden die Teile der Halteglieder miteinander befestigt.Before the mask is installed in the shield trough, the two parts of the holding members are not firmly connected to one another; they are held by feathers and flags. The mask is placed in the shield trough with the interposition of a distance gauge and then the parts of the holding members are fastened together.

Der Erfindung liegt daher die Aufgabe zugrunde, die Farbbildröhre der eingangs genannten Art derart auszugestalten, daß ein Toleranzausgleich zwischen der Schattenmaske und den Stiften in der Schirmwanne beim erstmaligen Einsetzen in einfacher Weise und mit einfachen Haltegliedern möglich ist.The invention is therefore based on the object to design the color picture tube of the type mentioned in such a way that a tolerance compensation between the shadow mask and the pins in the screen trough when it is first inserted is possible in a simple manner and with simple holding members.

Die Lösung dieser Aufgabe erfolgt mit den im Anspruch 1 angegebenen Mitteln. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen enthalten.This object is achieved with the means specified in claim 1. Advantageous refinements are contained in the subclaims.

Die Erfindung wird nun anhand von in den Figuren gezeigten Ausführungsbeispielen näher erläutert. Es zeigen:

  • Fig. 1 die Draufsicht auf eine Schirmwanne mit einer eingesetzten Schattenmaske ;
  • Fig. 2 die Draufsicht und die Seitenansicht einer ersten Ausführungsform der Halteglieder ;
  • Fig.3 die Draufsicht und die Seitenansicht einer zweiten Ausführungsform der Halteglieder ;
  • Fig.4 die Draufsicht und die Seitenansicht einer dritten Ausführungsform der Halteglieder und
  • Fig. 5 die Seitenansicht einer vierten Ausführungsform, teilweise geschnitten dargestellt.
The invention will now be explained in more detail with reference to exemplary embodiments shown in the figures. Show it:
  • Figure 1 is a plan view of an umbrella pan with a shadow mask inserted.
  • 2 shows the top view and the side view of a first embodiment of the holding members;
  • 3 shows the top view and the side view of a second embodiment of the holding members;
  • 4 shows the top view and the side view of a third embodiment of the holding members and
  • Fig. 5 shows the side view of a fourth embodiment, shown partially in section.

In Fig. 1 ist von einer üblichen Farbbildröhre nur die Schirmwanne 1 mit der eingesetzten Schattenmaske 2 dargestellt. Es sind in diese Darstellung die x-Achse, die y-Achse und die Diagonalen D1 und D2 eingezeichnet. Die Fläche auf dem Rand 4 der Schirmwanne 1, an welcher die Schirmwanne mittels Glaslot mit dem Konus verbunden wird, ist mit 3 bezeichnet. Die Schirmwanne 1 trägt auf ihrer Innenseite die nicht dargestellte Leuchtschicht. Im Schnittpunkt der Diagonalen D1 und D2 mit dem Rand 4 der Schirmwanne 7 sind Stifte 5 angeordnet, die über Halteglieder 6 die Schattenmaske 2 tragen. Die Halteglieder 6 greifen am Rand 7 der Schattenmaske 2 an.In Fig. 1 only the screen trough 1 with the shadow mask 2 is shown from a conventional color picture tube. The x-axis, the y-axis and the diagonals D1 and D2 are shown in this representation. The area on the edge 4 of the shield trough 1, on which the shield trough is connected to the cone by means of glass solder, is designated by 3. The screen trough 1 carries the luminescent layer, not shown, on its inside. At the intersection of the diagonals D1 and D2 with the edge 4 of the screen trough 7, pins 5 are arranged which support the shadow mask 2 via holding members 6. The holding members 6 engage on the edge 7 of the shadow mask 2.

Die Symmetrieachse (Längsachse) der Farbbildröhre steht im Schnittpunkt der x-Achse mit der y-Achse senkrecht auf der Zeichenebene. Die Halterung der Maske 2 muß nicht in den Ecken der Schirmwanne 1 erfolgen, sondern kann auch in den Schnittpunkten der x-und der y-Achse mit dem Rand 7 der Schattenmaske 2 und dem Rand 4 der Schirmwanne vorgesehen sein.The axis of symmetry (longitudinal axis) of the color picture tube is at the intersection of the x-axis with the y-axis perpendicular to the plane of the drawing. The mask 2 does not have to be held in the corners of the screen trough 1, but can also be provided at the intersections of the x and y axes with the edge 7 of the shadow mask 2 and the edge 4 of the screen trough.

In Fig. ist eine erste Ausführungsform eines Haltegliedes 6 in zwei Ansichten dargestellt. Das Halteglied 6 besteht aus zwei Teilen 6a und 6b, die zum Teil übereinanderliegen. Das Teil 6a ist an seinem freien Ende mit dem etwa dreieckigen Loch 8 versehen, durch das der Stift 5 greift. Am freien Ende des Teiles 6b ist eine symmetrisch zur Längsachse des Haltegliedes 6 liegende Aussparung 9 vorhanden, so daß das Teil 6b in zwei Zinken 10a und 10b ausläuft. Diese Zinken 10a, 10b werden mit dem Rand 7 der Schattenmaske 2 verbunden.In Fig. A first embodiment of a holding member 6 is shown in two views. The holding member 6 consists of two parts 6a and 6b, some of which lie one above the other. The part 6a is provided at its free end with the approximately triangular hole 8 through which the pin 5 engages. At the free end of part 6b there is a recess 9 lying symmetrically to the longitudinal axis of the holding member 6, so that the part 6b ends in two prongs 10a and 10b. These tines 10a, 10b are connected to the edge 7 of the shadow mask 2.

Die Teile 6a und 6b sind zueinander beweglich angeordnet, was durch ein im einander überdeckenden Bereich der Teile vorhandenes Drehgelenk erreicht wird. Das Drehgelenk besteht bei dieser Ausführungsform des Haltegliedes 6 aus einem Rohrniet 11.The parts 6a and 6b are arranged such that they can move with respect to one another, which is achieved by a swivel joint present in the overlapping region of the parts. In this embodiment of the holding member 6, the swivel joint consists of a tubular rivet 11.

Das freie Ende des Teiles 6a ist wesentlich schmaler als sein vom Teil 6b überdeckter Bereich. Hierdurch weist das Teil 6a zwei Schultern 13 auf, deren Rand auf einem Kreisbogen liegt. Der Kreisbogen wird durch einen vom Rohrniet 11 bis zu den schultern 13 reichenden Radius bestimmt. In der Mitte der Schulter 13 ist je einer der Führungslappen 12 vorhanden, die den Rand des Teiles 6b umgreifen. Dieser Rand des Teiles 6b bildet einen Teil eines Kreisbogens, der durch den erwähnten Radius bestimmt wird. Die Längsachsen der Führungslappen 12 verlaufen in ihrer Verlängerung durch den Rohrniet 11. Durch diese Anordnung der Fuhrungslappen 12 werden die beiden Teile 6a und 6b des Haltegliedes 6 in etwa einer Ebene gehalten und der Rohrniet 11 entla- . stet, ohne daß die Drehbewegung der Teile gegeneinander behindert oder eingeschränkt wäre.The free end of part 6a is much narrower than its area covered by part 6b. As a result, the part 6a has two shoulders 13, the edge of which lies on an arc. The circular arc is determined by a radius extending from the tubular rivet 11 to the shoulders 13. In the middle of the shoulder 13 there is one of the guide tabs 12 which surround the edge of the part 6b. This edge of part 6b forms part of an arc of a circle which is determined by the radius mentioned. The longitudinal axes of the guide tabs 12 extend through the tubular rivet 11. This arrangement of the guide tabs 12 holds the two parts 6a and 6b of the holding member 6 in approximately one plane and releases the tubular rivet 11. Stead without the rotary movement of the parts against each other would be hindered or restricted.

In Fig. 3 ist eine zweite Ausführungsform eines Haltegliedes 6 in zwei Ansichten dargestellt, bei der gegenüber der ersten Ausführungsform das Drehgelenk einfacher ausgeführt ist. Das Teil 6a weist an seinem vom Teil 6b überdeckten Ende einen Einschnitt 14 auf und die Aussparung 9 zwischen den zinken 10a, 10b im Teil 6b reicht bis auf den Grund des Einschnittes 14. Die Aussparung 9 ist nahe dem Grund des Einschnittes durch einen Kreisbogen begrenzt. Im Schnittpunkt der Längsachse des Haltegliedes 6 mit dem Einschnitt 14 ist am Teil 6a ein Führungslappen 15 angeordnet, der um den Rand des Teiles 6b im Bereich des Ausschnittes 9 herumgreift. Bei dieser Ausführungsform ist also das die Teile 6a und 6b verbindende Drehgelenk auf einfache Weise aus den zwei Führungslappen 12 und dem diesen gegenüberliegenden Führungslappen 15 gebildet.In Fig. 3, a second embodiment of a holding member 6 is shown in two views, in which compared to the first embodiment, the pivot joint is made simpler. The part 6a has an incision 14 at its end covered by the part 6b and the recess 9 between the prongs 10a, 10b in part 6b extends to the bottom of the incision 14. The recess 9 is delimited by an arc near the bottom of the incision . At the intersection of the longitudinal axis of the holding member 6 with the incision 14, a guide tab 15 is arranged on the part 6a, which engages around the edge of the part 6b in the region of the cutout 9. In this embodiment, this is the parts 6a and 6b connecting swivel joint formed in a simple manner from the two guide tabs 12 and the guide tab 15 opposite them.

In Fig. 4 ist eine dritte Ausführungsform eines Haltegliedes in zwei Ansichten dargestellt. Wenn zwischen den beiden Teilen 6a und 6b des Haltegliedes 6 nur eine seitliche Verschiebung ausreichend ist, dann kann diese Ausführungsform gewählt werden. Das Teil 6a weist wieder an den Schultern 13 Führungslappen 12 auf, die um das Teil 6b greifen. Hierbei ist der Verlauf der Schultern 13 dadurch vereinfacht, daß ihr Rand senkrecht auf der Längsachse des Haltegliedes 6 steht. In gleicher Weise weist das Teil 6b Schultern 16 auf, deren Rand auch senkrecht auf der Längsachse des Haltegliedes steht. Am Rand des vom Teil 6b überdeckten Endes des Teiles 6a sind zwei weitere Führungslappen 17 vorhanden, die die Schultern 16 am Teil 6b umgreifen. Die mögliche seitliche Bewegung der Teile 6a und 6b gegeneinander ist durch den jeweiligen Anschlag eines Führungslappens 12 an das schmale freie Ende des Teiles 6a bzw. eines Führungslappens 17 an einen Zinken 10 am freien Ende des Teiles 6b begrenzt.4 shows a third embodiment of a holding member in two views. If only a lateral displacement is sufficient between the two parts 6a and 6b of the holding member 6, then this embodiment can be chosen. The part 6a again has on the shoulders 13 guide tabs 12 which grip around the part 6b. Here, the course of the shoulders 13 is simplified in that their edge is perpendicular to the longitudinal axis of the holding member 6. In the same way, the part 6b has shoulders 16, the edge of which is also perpendicular to the longitudinal axis of the holding member. At the edge of the end of part 6a covered by part 6b there are two further guide tabs 17 which grip around shoulders 16 on part 6b. The possible lateral movement of the parts 6a and 6b against one another is limited by the respective abutment of a guide tab 12 on the narrow free end of part 6a or a guide tab 17 on a prong 10 at the free end of part 6b.

Bei einer Farbbildröhre mit einer rahmenlosen Schattenmaske 2 können die Halteglieder 6 auch gemäß der in Fig.5 dargestellten Ausführungsform ausgebildet sein. Hierbei dient das Teil 6b der Halteglieder gleichzeitig als Eckenverstärkung 18 fur die Schattenmaske 2. Im Überlappungsbereich der Teile 6a und 6b ist als Drehgelenk der Rohrniet 11 angeordnet. Zur Versteifung des Teiles 6a kann es mit umgefalzten Rändern 19 versehen sein.In the case of a color picture tube with a frameless shadow mask 2, the holding members 6 can also be designed in accordance with the embodiment shown in FIG. Here, part 6b of the holding members also serves as corner reinforcement 18 for shadow mask 2. In the overlap area of parts 6a and 6b, tubular rivet 11 is arranged as a swivel joint. To stiffen the part 6a, it can be provided with folded-over edges 19.

Vor dem Einbau der Schattenmaske 2 in die Schirmwanne 1 werden die Halteglieder 6 an den dafür vorgesehenen Stellen mit dem Rand 7 der Schattenmaske 2, direkt mit der Schattenmaske oder über ein Zwischenstück mit der Schattenmaske verbunden. Die Schattenmaske 2 wird in die Schirmwanne 1 eingesetzt und dabei werden gleichzeitig die Halteglieder 6 auf die Stifte 5 geschoben. Durch die Beweglichkeit der beiden Teile der Halteglieder findet dabei ein Ausgleich der Toleranzen durch eine mögliche Bewegung quer zur Symmetrieachse der Farbbildröhre statt. Der Abstand der Schattenmaske von der Leuchtschicht bleibt dabei unverändert. Die Halteglieder werden danach dadurch in ihrer eingenommenen Lage fixiert, daß die Teile der Halteglieder, zum Beispiel durch Punktschweißen mittels eines Laserstrahles, miteinander verbunden werden.Before the shadow mask 2 is installed in the screen trough 1, the holding members 6 are connected to the edge 7 of the shadow mask 2 at the locations provided for this purpose, directly to the shadow mask or via an intermediate piece to the shadow mask. The shadow mask 2 is inserted into the shield trough 1 and the holding members 6 are simultaneously pushed onto the pins 5. Due to the mobility of the two parts of the holding members, the tolerances are compensated for by a possible movement transverse to the axis of symmetry of the color picture tube. The distance between the shadow mask and the luminescent layer remains unchanged. The holding members are then fixed in their assumed position in that the parts of the holding members are connected to one another, for example by spot welding using a laser beam.

Die neuen, einfachen Halteglieder 6 können außerhalb der Farbbildröhre montiert und an der Schattenmaske befestigt werden. Hierdurch liegt dann der Abstand zwischen der Schattenmaske und der Leuchtschicht nach dem Einsetzen in die Schirmwanne fest, so daß keinerlei Abstandslehren benötigt werden. Der Ausgleich eventueller Toleranzen in der Richtung quer zur Symmetrieachse der Farbbildröhre erfolgt dann wie schon beschrieben.The new, simple holding members 6 can be mounted outside the color picture tube and attached to the shadow mask. As a result, the distance between the shadow mask and the luminescent layer is then fixed after insertion into the screen trough, so that no distance gauges are required. Any tolerances in the direction transverse to the axis of symmetry of the color picture tube are then compensated for as already described.

Es ist noch anzumerken, daß es auch möglich ist, die Halteglieder mit den dann einfacher ausgebildeten Stiften im Rand der Schirmwanne fest zu verbinden und zwischen der Schattenmaske und den dort anliegenden Enden der Halteglieder die lösbare Verbindung vorzusehen.It should also be noted that it is also possible to firmly connect the holding members to the then simpler pins in the edge of the shield trough and to provide the releasable connection between the shadow mask and the ends of the holding members adjacent there.

Claims (8)

1. Colour picture tube comprising a face plate (1) and a cone with a neck, with an electron gun system disposed inside the neck and the inner surface of the face plate coated with a layer of phosphor, and with a shadow mask (2) mounted in the proximity of the face plate, on which shadow mask (2) there are mounted two-part holding members (6) which each have at their free ends a hole into which pins (5) provided in the face plate (1) engage and which are retained at the pins (5) with the aid of locking springs, characterized in that, between the two parts (6a, 6b) of the holding members (6) , guiding means (11, 12, 13, 15, 16, 17) are provided which permit a movement of the two parts (6a, 6b) of the holding members (6) in relation to each other in a plane which is common to the two parts (6a, 6b) and perpendicular to the longitudinal axis of the colour picture tube.
2. A colour picture tube as claimed in Claim 1, characterized in that the two parts (6a, 6b) of each holding member (6) overlap each other and, within the overlapping range, are joined to one another with the aid of a swivel joint (11).
3. A colour picture tube as claimed in Claim 2, characterized in that the swivel joint consists of a tubular rivet (11).
4. A colour picture tube as claimed in Claim 3, characterized in that the first part (6a) of the holding member (6) comprises two shoulders (13) which are each provided with a guide flap (12) extending around the end of the second part (6b).
5. A colour picture tube as claimed in Claim 2, characterized in that the swivel joint consists of a guide flap (15) at the rim portion of the first part (6a) which extends around the second part (6b), and that opposite this guide flap (15), at the end of the first part.(6a), two further guide flaps (12) are provided which extend around the end of the second part (6b).
6. A colour picture tube as claimed in Claim 1, characterized in that the two parts (6a, 6b) of the holding members (6) are joined to one another via a straight line motion device.
7. A colour picture tube as claimed in Claim 6, characterized in that the first part (6a) embraces the second part (6b) with four guide flaps (12,17) in such a way that in each case two side flaps (12 or 17) lie on a connecting line which is perpendicular to the longitudinal axis of the holding members (6), with the two connecting lines running parallel to one another.
8. A colour picture tube as claimed in Claim 2, 3 or 6, comprising a frameless shadow mask, characterized in that the part (6b) mounted on the shadow mask (2) simultaneously serves as a corner reinforcement (18) for the shadow mask.
EP85112262A 1984-09-29 1985-09-27 Colour display tube Expired EP0180040B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3435891 1984-09-29
DE19843435891 DE3435891A1 (en) 1984-09-29 1984-09-29 COLORED PIPES

Publications (3)

Publication Number Publication Date
EP0180040A2 EP0180040A2 (en) 1986-05-07
EP0180040A3 EP0180040A3 (en) 1986-07-30
EP0180040B1 true EP0180040B1 (en) 1988-09-07

Family

ID=6246753

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85112262A Expired EP0180040B1 (en) 1984-09-29 1985-09-27 Colour display tube

Country Status (5)

Country Link
US (1) US4663561A (en)
EP (1) EP0180040B1 (en)
JP (1) JPS6185756A (en)
CA (1) CA1222278A (en)
DE (2) DE3435891A1 (en)

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Publication number Priority date Publication date Assignee Title
NL8702993A (en) * 1987-12-11 1989-07-03 Philips Nv COLOR IMAGE TUBE.
NL8800883A (en) * 1988-04-07 1988-06-01 Philips Nv COLOR IMAGE TUBE AND METHOD FOR MAKING SUCH A COLOR IMAGE TUBE.
NL8801944A (en) * 1988-08-04 1990-03-01 Philips Nv METHOD FOR MANUFACTURING A COLOR IMAGE TUBE
TW341378U (en) * 1993-09-21 1998-09-21 Thomson Consumer Electronics Color picture tube having improved shadow mask-frame assembly support means
US6265818B1 (en) 1994-09-02 2001-07-24 Philips Electronics North America Corporation Stiffened support springs and CRT incorporating same

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Publication number Priority date Publication date Assignee Title
JPS55154038A (en) * 1979-05-18 1980-12-01 Hitachi Ltd Shadow mask retaining frame body
NL8004173A (en) * 1980-07-21 1982-02-16 Philips Nv COLOR IMAGE TUBE.
NL8102182A (en) * 1981-05-04 1982-12-01 Philips Nv COLOR IMAGE TUBE.
JPS58111242A (en) * 1981-12-25 1983-07-02 Hitachi Ltd Shadow-mask supporting spring
US4439709A (en) * 1982-04-29 1984-03-27 Rca Corporation Color picture tube having improved temperature compensating support for a mask-frame assembly
US4467242A (en) * 1982-10-18 1984-08-21 Rca Corporation Color selection electrode mounting structure having an off-set washer

Also Published As

Publication number Publication date
DE3564888D1 (en) 1988-10-13
CA1222278A (en) 1987-05-26
EP0180040A3 (en) 1986-07-30
US4663561A (en) 1987-05-05
DE3435891A1 (en) 1986-04-10
JPH0219578B2 (en) 1990-05-02
JPS6185756A (en) 1986-05-01
EP0180040A2 (en) 1986-05-07

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